dropbear: cli-tcpfwd.c annotate

annotate cli-tcpfwd.c @ 786:e76614145aea DROPBEAR_2013.58

2013.58

author	Matt Johnston <matt@ucc.asn.au>
date	Thu, 18 Apr 2013 22:57:47 +0800
parents	af304deacb4c
children	c19acba28590

rev	line source
74 e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	1 /*
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	2 * Dropbear SSH
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	3 *
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	4 * Copyright (c) 2002,2003 Matt Johnston
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	5 * All rights reserved.
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	6 *
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	7 * Permission is hereby granted, free of charge, to any person obtaining a copy
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	8 * of this software and associated documentation files (the "Software"), to deal
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	9 * in the Software without restriction, including without limitation the rights
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	11 * copies of the Software, and to permit persons to whom the Software is
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	12 * furnished to do so, subject to the following conditions:
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	13 *
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	14 * The above copyright notice and this permission notice shall be included in
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	15 * all copies or substantial portions of the Software.
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	16 *
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	23 * SOFTWARE. */
e3adf4cf5465 License boilerplate etc, add Mihnea as an author to some of the files Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	24
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: diff changeset	25 #include "includes.h"
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: diff changeset	26 #include "options.h"
64 efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	27 #include "dbutil.h"
efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	28 #include "tcpfwd.h"
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: diff changeset	29 #include "channel.h"
64 efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	30 #include "runopts.h"
efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	31 #include "session.h"
efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	32 #include "ssh.h"
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: diff changeset	33
156 8c2b3506f112 Rearrange preprocessor parts so that compilation with various options Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	34 #ifdef ENABLE_CLI_REMOTETCPFWD
64 efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	35 static int newtcpforwarded(struct Channel * channel);
efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	36
efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	37 const struct ChanType cli_chan_tcpremote = {
efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	38 1, /* sepfds */
efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	39 "forwarded-tcpip",
efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	40 newtcpforwarded,
efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	41 NULL,
efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	42 NULL,
efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	43 NULL
efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	44 };
156 8c2b3506f112 Rearrange preprocessor parts so that compilation with various options Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	45 #endif
8c2b3506f112 Rearrange preprocessor parts so that compilation with various options Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	46
8c2b3506f112 Rearrange preprocessor parts so that compilation with various options Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	47 #ifdef ENABLE_CLI_LOCALTCPFWD
578 44f486b72427 - tcpfwd bindaddr support against trunk. needs merging. Matt Johnston <matt@ucc.asn.au> parents: 551 diff changeset	48 static int cli_localtcp(const char* listenaddr,
44f486b72427 - tcpfwd bindaddr support against trunk. needs merging. Matt Johnston <matt@ucc.asn.au> parents: 551 diff changeset	49 unsigned int listenport,
44f486b72427 - tcpfwd bindaddr support against trunk. needs merging. Matt Johnston <matt@ucc.asn.au> parents: 551 diff changeset	50 const char* remoteaddr,
156 8c2b3506f112 Rearrange preprocessor parts so that compilation with various options Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	51 unsigned int remoteport);
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: diff changeset	52 static const struct ChanType cli_chan_tcplocal = {
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: diff changeset	53 1, /* sepfds */
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: diff changeset	54 "direct-tcpip",
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: diff changeset	55 NULL,
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: diff changeset	56 NULL,
64 efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	57 NULL,
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: diff changeset	58 NULL
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: diff changeset	59 };
156 8c2b3506f112 Rearrange preprocessor parts so that compilation with various options Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	60 #endif
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: diff changeset	61
156 8c2b3506f112 Rearrange preprocessor parts so that compilation with various options Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	62 #ifdef ENABLE_CLI_LOCALTCPFWD
63 dcc43965928f - A nice cleaner structure for tcp (acceptor) forwarding. Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	63 void setup_localtcp() {
551 c3f2ec71e3d4 New standard linked list to use, rather than adhoc SignKeyList or TCPFwdList Matt Johnston <matt@ucc.asn.au> parents: 505 diff changeset	64 m_list_elem *iter;
64 efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	65 int ret;
efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	66
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	67 TRACE(("enter setup_localtcp"))
66 38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args Matt Johnston <matt@ucc.asn.au> parents: 64 diff changeset	68
551 c3f2ec71e3d4 New standard linked list to use, rather than adhoc SignKeyList or TCPFwdList Matt Johnston <matt@ucc.asn.au> parents: 505 diff changeset	69 for (iter = cli_opts.localfwds->first; iter; iter = iter->next) {
c3f2ec71e3d4 New standard linked list to use, rather than adhoc SignKeyList or TCPFwdList Matt Johnston <matt@ucc.asn.au> parents: 505 diff changeset	70 struct TCPFwdEntry * fwd = (struct TCPFwdEntry*)iter->item;
578 44f486b72427 - tcpfwd bindaddr support against trunk. needs merging. Matt Johnston <matt@ucc.asn.au> parents: 551 diff changeset	71 ret = cli_localtcp(
44f486b72427 - tcpfwd bindaddr support against trunk. needs merging. Matt Johnston <matt@ucc.asn.au> parents: 551 diff changeset	72 fwd->listenaddr,
44f486b72427 - tcpfwd bindaddr support against trunk. needs merging. Matt Johnston <matt@ucc.asn.au> parents: 551 diff changeset	73 fwd->listenport,
551 c3f2ec71e3d4 New standard linked list to use, rather than adhoc SignKeyList or TCPFwdList Matt Johnston <matt@ucc.asn.au> parents: 505 diff changeset	74 fwd->connectaddr,
c3f2ec71e3d4 New standard linked list to use, rather than adhoc SignKeyList or TCPFwdList Matt Johnston <matt@ucc.asn.au> parents: 505 diff changeset	75 fwd->connectport);
64 efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	76 if (ret == DROPBEAR_FAILURE) {
578 44f486b72427 - tcpfwd bindaddr support against trunk. needs merging. Matt Johnston <matt@ucc.asn.au> parents: 551 diff changeset	77 dropbear_log(LOG_WARNING, "Failed local port forward %s:%d:%s:%d",
44f486b72427 - tcpfwd bindaddr support against trunk. needs merging. Matt Johnston <matt@ucc.asn.au> parents: 551 diff changeset	78 fwd->listenaddr,
551 c3f2ec71e3d4 New standard linked list to use, rather than adhoc SignKeyList or TCPFwdList Matt Johnston <matt@ucc.asn.au> parents: 505 diff changeset	79 fwd->listenport,
c3f2ec71e3d4 New standard linked list to use, rather than adhoc SignKeyList or TCPFwdList Matt Johnston <matt@ucc.asn.au> parents: 505 diff changeset	80 fwd->connectaddr,
c3f2ec71e3d4 New standard linked list to use, rather than adhoc SignKeyList or TCPFwdList Matt Johnston <matt@ucc.asn.au> parents: 505 diff changeset	81 fwd->connectport);
c3f2ec71e3d4 New standard linked list to use, rather than adhoc SignKeyList or TCPFwdList Matt Johnston <matt@ucc.asn.au> parents: 505 diff changeset	82 }
64 efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	83 }
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	84 TRACE(("leave setup_localtcp"))
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: diff changeset	85
63 dcc43965928f - A nice cleaner structure for tcp (acceptor) forwarding. Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	86 }
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: diff changeset	87
578 44f486b72427 - tcpfwd bindaddr support against trunk. needs merging. Matt Johnston <matt@ucc.asn.au> parents: 551 diff changeset	88 static int cli_localtcp(const char* listenaddr,
44f486b72427 - tcpfwd bindaddr support against trunk. needs merging. Matt Johnston <matt@ucc.asn.au> parents: 551 diff changeset	89 unsigned int listenport,
44f486b72427 - tcpfwd bindaddr support against trunk. needs merging. Matt Johnston <matt@ucc.asn.au> parents: 551 diff changeset	90 const char* remoteaddr,
63 dcc43965928f - A nice cleaner structure for tcp (acceptor) forwarding. Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	91 unsigned int remoteport) {
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: diff changeset	92
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: diff changeset	93 struct TCPListener* tcpinfo = NULL;
64 efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	94 int ret;
efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	95
efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	96 TRACE(("enter cli_localtcp: %d %s %d", listenport, remoteaddr,
efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	97 remoteport));
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: diff changeset	98
184 ca55377e4f7e - allocate correct buffer size for channel info, rather than sizeof(pointer). Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	99 tcpinfo = (struct TCPListener*)m_malloc(sizeof(struct TCPListener));
258 306499676384 * add -g (dbclient) and -a (dropbear) options for allowing non-local Matt Johnston <matt@ucc.asn.au> parents: 253 diff changeset	100
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 74 diff changeset	101 tcpinfo->sendaddr = m_strdup(remoteaddr);
63 dcc43965928f - A nice cleaner structure for tcp (acceptor) forwarding. Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	102 tcpinfo->sendport = remoteport;
258 306499676384 * add -g (dbclient) and -a (dropbear) options for allowing non-local Matt Johnston <matt@ucc.asn.au> parents: 253 diff changeset	103
578 44f486b72427 - tcpfwd bindaddr support against trunk. needs merging. Matt Johnston <matt@ucc.asn.au> parents: 551 diff changeset	104 if (listenaddr)
44f486b72427 - tcpfwd bindaddr support against trunk. needs merging. Matt Johnston <matt@ucc.asn.au> parents: 551 diff changeset	105 {
44f486b72427 - tcpfwd bindaddr support against trunk. needs merging. Matt Johnston <matt@ucc.asn.au> parents: 551 diff changeset	106 tcpinfo->listenaddr = m_strdup(listenaddr);
44f486b72427 - tcpfwd bindaddr support against trunk. needs merging. Matt Johnston <matt@ucc.asn.au> parents: 551 diff changeset	107 }
44f486b72427 - tcpfwd bindaddr support against trunk. needs merging. Matt Johnston <matt@ucc.asn.au> parents: 551 diff changeset	108 else
44f486b72427 - tcpfwd bindaddr support against trunk. needs merging. Matt Johnston <matt@ucc.asn.au> parents: 551 diff changeset	109 {
44f486b72427 - tcpfwd bindaddr support against trunk. needs merging. Matt Johnston <matt@ucc.asn.au> parents: 551 diff changeset	110 if (opts.listen_fwd_all) {
44f486b72427 - tcpfwd bindaddr support against trunk. needs merging. Matt Johnston <matt@ucc.asn.au> parents: 551 diff changeset	111 tcpinfo->listenaddr = m_strdup("");
44f486b72427 - tcpfwd bindaddr support against trunk. needs merging. Matt Johnston <matt@ucc.asn.au> parents: 551 diff changeset	112 } else {
44f486b72427 - tcpfwd bindaddr support against trunk. needs merging. Matt Johnston <matt@ucc.asn.au> parents: 551 diff changeset	113 tcpinfo->listenaddr = m_strdup("localhost");
44f486b72427 - tcpfwd bindaddr support against trunk. needs merging. Matt Johnston <matt@ucc.asn.au> parents: 551 diff changeset	114 }
258 306499676384 * add -g (dbclient) and -a (dropbear) options for allowing non-local Matt Johnston <matt@ucc.asn.au> parents: 253 diff changeset	115 }
63 dcc43965928f - A nice cleaner structure for tcp (acceptor) forwarding. Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	116 tcpinfo->listenport = listenport;
258 306499676384 * add -g (dbclient) and -a (dropbear) options for allowing non-local Matt Johnston <matt@ucc.asn.au> parents: 253 diff changeset	117
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: diff changeset	118 tcpinfo->chantype = &cli_chan_tcplocal;
259 c049490e43fe * fix -L forwarding on the client, broke last rev Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	119 tcpinfo->tcp_type = direct;
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: diff changeset	120
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: diff changeset	121 ret = listen_tcpfwd(tcpinfo);
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: diff changeset	122
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: diff changeset	123 if (ret == DROPBEAR_FAILURE) {
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: diff changeset	124 m_free(tcpinfo);
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: diff changeset	125 }
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	126 TRACE(("leave cli_localtcp: %d", ret))
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: diff changeset	127 return ret;
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: diff changeset	128 }
156 8c2b3506f112 Rearrange preprocessor parts so that compilation with various options Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	129 #endif /* ENABLE_CLI_LOCALTCPFWD */
64 efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	130
156 8c2b3506f112 Rearrange preprocessor parts so that compilation with various options Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	131 #ifdef ENABLE_CLI_REMOTETCPFWD
578 44f486b72427 - tcpfwd bindaddr support against trunk. needs merging. Matt Johnston <matt@ucc.asn.au> parents: 551 diff changeset	132 static void send_msg_global_request_remotetcp(const char *addr, int port) {
64 efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	133
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	134 TRACE(("enter send_msg_global_request_remotetcp"))
64 efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	135
efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	136 CHECKCLEARTOWRITE();
efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	137 buf_putbyte(ses.writepayload, SSH_MSG_GLOBAL_REQUEST);
efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	138 buf_putstring(ses.writepayload, "tcpip-forward", 13);
505 805e557fdff7 Report errors if a remote request fails Matt Johnston <matt@ucc.asn.au> parents: 259 diff changeset	139 buf_putbyte(ses.writepayload, 1); /* want_reply */
578 44f486b72427 - tcpfwd bindaddr support against trunk. needs merging. Matt Johnston <matt@ucc.asn.au> parents: 551 diff changeset	140 buf_putstring(ses.writepayload, addr, strlen(addr));
64 efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	141 buf_putint(ses.writepayload, port);
efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	142
efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	143 encrypt_packet();
efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	144
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	145 TRACE(("leave send_msg_global_request_remotetcp"))
64 efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	146 }
efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	147
505 805e557fdff7 Report errors if a remote request fails Matt Johnston <matt@ucc.asn.au> parents: 259 diff changeset	148 /* The only global success/failure messages are for remotetcp.
805e557fdff7 Report errors if a remote request fails Matt Johnston <matt@ucc.asn.au> parents: 259 diff changeset	149 * Since there isn't any identifier in these messages, we have to rely on them
805e557fdff7 Report errors if a remote request fails Matt Johnston <matt@ucc.asn.au> parents: 259 diff changeset	150 * being in the same order as we sent the requests. This is the ordering
631 af304deacb4c Print the server allocated port when using dbclient -R 0:.... Matt Johnston <matt@ucc.asn.au> parents: 591 diff changeset	151 * of the cli_opts.remotefwds list.
af304deacb4c Print the server allocated port when using dbclient -R 0:.... Matt Johnston <matt@ucc.asn.au> parents: 591 diff changeset	152 * If the requested remote port is 0 the listen port will be
af304deacb4c Print the server allocated port when using dbclient -R 0:.... Matt Johnston <matt@ucc.asn.au> parents: 591 diff changeset	153 * dynamically allocated by the server and the port number will be returned
af304deacb4c Print the server allocated port when using dbclient -R 0:.... Matt Johnston <matt@ucc.asn.au> parents: 591 diff changeset	154 * to client and the port number reported to the user. */
505 805e557fdff7 Report errors if a remote request fails Matt Johnston <matt@ucc.asn.au> parents: 259 diff changeset	155 void cli_recv_msg_request_success() {
631 af304deacb4c Print the server allocated port when using dbclient -R 0:.... Matt Johnston <matt@ucc.asn.au> parents: 591 diff changeset	156 /* We just mark off that we have received the reply,
505 805e557fdff7 Report errors if a remote request fails Matt Johnston <matt@ucc.asn.au> parents: 259 diff changeset	157 * so that we can report failure for later ones. */
551 c3f2ec71e3d4 New standard linked list to use, rather than adhoc SignKeyList or TCPFwdList Matt Johnston <matt@ucc.asn.au> parents: 505 diff changeset	158 m_list_elem * iter = NULL;
c3f2ec71e3d4 New standard linked list to use, rather than adhoc SignKeyList or TCPFwdList Matt Johnston <matt@ucc.asn.au> parents: 505 diff changeset	159 for (iter = cli_opts.remotefwds->first; iter; iter = iter->next) {
c3f2ec71e3d4 New standard linked list to use, rather than adhoc SignKeyList or TCPFwdList Matt Johnston <matt@ucc.asn.au> parents: 505 diff changeset	160 struct TCPFwdEntry fwd = (struct TCPFwdEntry)iter->item;
c3f2ec71e3d4 New standard linked list to use, rather than adhoc SignKeyList or TCPFwdList Matt Johnston <matt@ucc.asn.au> parents: 505 diff changeset	161 if (!fwd->have_reply) {
c3f2ec71e3d4 New standard linked list to use, rather than adhoc SignKeyList or TCPFwdList Matt Johnston <matt@ucc.asn.au> parents: 505 diff changeset	162 fwd->have_reply = 1;
631 af304deacb4c Print the server allocated port when using dbclient -R 0:.... Matt Johnston <matt@ucc.asn.au> parents: 591 diff changeset	163 if (fwd->listenport == 0) {
af304deacb4c Print the server allocated port when using dbclient -R 0:.... Matt Johnston <matt@ucc.asn.au> parents: 591 diff changeset	164 /* The server should let us know which port was allocated if we requestd port 0 */
af304deacb4c Print the server allocated port when using dbclient -R 0:.... Matt Johnston <matt@ucc.asn.au> parents: 591 diff changeset	165 int allocport = buf_getint(ses.payload);
af304deacb4c Print the server allocated port when using dbclient -R 0:.... Matt Johnston <matt@ucc.asn.au> parents: 591 diff changeset	166 if (allocport > 0) {
af304deacb4c Print the server allocated port when using dbclient -R 0:.... Matt Johnston <matt@ucc.asn.au> parents: 591 diff changeset	167 dropbear_log(LOG_INFO, "Allocated port %d for remote forward to %s:%d",
af304deacb4c Print the server allocated port when using dbclient -R 0:.... Matt Johnston <matt@ucc.asn.au> parents: 591 diff changeset	168 allocport, fwd->connectaddr, fwd->connectport);
af304deacb4c Print the server allocated port when using dbclient -R 0:.... Matt Johnston <matt@ucc.asn.au> parents: 591 diff changeset	169 }
af304deacb4c Print the server allocated port when using dbclient -R 0:.... Matt Johnston <matt@ucc.asn.au> parents: 591 diff changeset	170 }
505 805e557fdff7 Report errors if a remote request fails Matt Johnston <matt@ucc.asn.au> parents: 259 diff changeset	171 return;
805e557fdff7 Report errors if a remote request fails Matt Johnston <matt@ucc.asn.au> parents: 259 diff changeset	172 }
805e557fdff7 Report errors if a remote request fails Matt Johnston <matt@ucc.asn.au> parents: 259 diff changeset	173 }
805e557fdff7 Report errors if a remote request fails Matt Johnston <matt@ucc.asn.au> parents: 259 diff changeset	174 }
805e557fdff7 Report errors if a remote request fails Matt Johnston <matt@ucc.asn.au> parents: 259 diff changeset	175
805e557fdff7 Report errors if a remote request fails Matt Johnston <matt@ucc.asn.au> parents: 259 diff changeset	176 void cli_recv_msg_request_failure() {
551 c3f2ec71e3d4 New standard linked list to use, rather than adhoc SignKeyList or TCPFwdList Matt Johnston <matt@ucc.asn.au> parents: 505 diff changeset	177 m_list_elem *iter;
c3f2ec71e3d4 New standard linked list to use, rather than adhoc SignKeyList or TCPFwdList Matt Johnston <matt@ucc.asn.au> parents: 505 diff changeset	178 for (iter = cli_opts.remotefwds->first; iter; iter = iter->next) {
c3f2ec71e3d4 New standard linked list to use, rather than adhoc SignKeyList or TCPFwdList Matt Johnston <matt@ucc.asn.au> parents: 505 diff changeset	179 struct TCPFwdEntry fwd = (struct TCPFwdEntry)iter->item;
c3f2ec71e3d4 New standard linked list to use, rather than adhoc SignKeyList or TCPFwdList Matt Johnston <matt@ucc.asn.au> parents: 505 diff changeset	180 if (!fwd->have_reply) {
c3f2ec71e3d4 New standard linked list to use, rather than adhoc SignKeyList or TCPFwdList Matt Johnston <matt@ucc.asn.au> parents: 505 diff changeset	181 fwd->have_reply = 1;
c3f2ec71e3d4 New standard linked list to use, rather than adhoc SignKeyList or TCPFwdList Matt Johnston <matt@ucc.asn.au> parents: 505 diff changeset	182 dropbear_log(LOG_WARNING, "Remote TCP forward request failed (port %d -> %s:%d)", fwd->listenport, fwd->connectaddr, fwd->connectport);
505 805e557fdff7 Report errors if a remote request fails Matt Johnston <matt@ucc.asn.au> parents: 259 diff changeset	183 return;
805e557fdff7 Report errors if a remote request fails Matt Johnston <matt@ucc.asn.au> parents: 259 diff changeset	184 }
805e557fdff7 Report errors if a remote request fails Matt Johnston <matt@ucc.asn.au> parents: 259 diff changeset	185 }
805e557fdff7 Report errors if a remote request fails Matt Johnston <matt@ucc.asn.au> parents: 259 diff changeset	186 }
805e557fdff7 Report errors if a remote request fails Matt Johnston <matt@ucc.asn.au> parents: 259 diff changeset	187
64 efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	188 void setup_remotetcp() {
551 c3f2ec71e3d4 New standard linked list to use, rather than adhoc SignKeyList or TCPFwdList Matt Johnston <matt@ucc.asn.au> parents: 505 diff changeset	189 m_list_elem *iter;
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	190 TRACE(("enter setup_remotetcp"))
66 38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args Matt Johnston <matt@ucc.asn.au> parents: 64 diff changeset	191
551 c3f2ec71e3d4 New standard linked list to use, rather than adhoc SignKeyList or TCPFwdList Matt Johnston <matt@ucc.asn.au> parents: 505 diff changeset	192 for (iter = cli_opts.remotefwds->first; iter; iter = iter->next) {
c3f2ec71e3d4 New standard linked list to use, rather than adhoc SignKeyList or TCPFwdList Matt Johnston <matt@ucc.asn.au> parents: 505 diff changeset	193 struct TCPFwdEntry fwd = (struct TCPFwdEntry)iter->item;
578 44f486b72427 - tcpfwd bindaddr support against trunk. needs merging. Matt Johnston <matt@ucc.asn.au> parents: 551 diff changeset	194 if (!fwd->listenaddr)
44f486b72427 - tcpfwd bindaddr support against trunk. needs merging. Matt Johnston <matt@ucc.asn.au> parents: 551 diff changeset	195 {
44f486b72427 - tcpfwd bindaddr support against trunk. needs merging. Matt Johnston <matt@ucc.asn.au> parents: 551 diff changeset	196 // we store the addresses so that we can compare them
44f486b72427 - tcpfwd bindaddr support against trunk. needs merging. Matt Johnston <matt@ucc.asn.au> parents: 551 diff changeset	197 // when the server sends them back
44f486b72427 - tcpfwd bindaddr support against trunk. needs merging. Matt Johnston <matt@ucc.asn.au> parents: 551 diff changeset	198 if (opts.listen_fwd_all) {
44f486b72427 - tcpfwd bindaddr support against trunk. needs merging. Matt Johnston <matt@ucc.asn.au> parents: 551 diff changeset	199 fwd->listenaddr = m_strdup("");
44f486b72427 - tcpfwd bindaddr support against trunk. needs merging. Matt Johnston <matt@ucc.asn.au> parents: 551 diff changeset	200 } else {
44f486b72427 - tcpfwd bindaddr support against trunk. needs merging. Matt Johnston <matt@ucc.asn.au> parents: 551 diff changeset	201 fwd->listenaddr = m_strdup("localhost");
44f486b72427 - tcpfwd bindaddr support against trunk. needs merging. Matt Johnston <matt@ucc.asn.au> parents: 551 diff changeset	202 }
44f486b72427 - tcpfwd bindaddr support against trunk. needs merging. Matt Johnston <matt@ucc.asn.au> parents: 551 diff changeset	203 }
44f486b72427 - tcpfwd bindaddr support against trunk. needs merging. Matt Johnston <matt@ucc.asn.au> parents: 551 diff changeset	204 send_msg_global_request_remotetcp(fwd->listenaddr, fwd->listenport);
64 efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	205 }
efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	206
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	207 TRACE(("leave setup_remotetcp"))
64 efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	208 }
efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	209
efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	210 static int newtcpforwarded(struct Channel * channel) {
efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	211
578 44f486b72427 - tcpfwd bindaddr support against trunk. needs merging. Matt Johnston <matt@ucc.asn.au> parents: 551 diff changeset	212 char *origaddr = NULL;
64 efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	213 unsigned int origport;
551 c3f2ec71e3d4 New standard linked list to use, rather than adhoc SignKeyList or TCPFwdList Matt Johnston <matt@ucc.asn.au> parents: 505 diff changeset	214 m_list_elem * iter = NULL;
c3f2ec71e3d4 New standard linked list to use, rather than adhoc SignKeyList or TCPFwdList Matt Johnston <matt@ucc.asn.au> parents: 505 diff changeset	215 struct TCPFwdEntry *fwd;
64 efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	216 char portstring[NI_MAXSERV];
efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	217 int sock;
70 b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree Matt Johnston <matt@ucc.asn.au> parents: 66 diff changeset	218 int err = SSH_OPEN_ADMINISTRATIVELY_PROHIBITED;
64 efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	219
578 44f486b72427 - tcpfwd bindaddr support against trunk. needs merging. Matt Johnston <matt@ucc.asn.au> parents: 551 diff changeset	220 origaddr = buf_getstring(ses.payload, NULL);
64 efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	221 origport = buf_getint(ses.payload);
efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	222
efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	223 /* Find which port corresponds */
551 c3f2ec71e3d4 New standard linked list to use, rather than adhoc SignKeyList or TCPFwdList Matt Johnston <matt@ucc.asn.au> parents: 505 diff changeset	224 for (iter = cli_opts.remotefwds->first; iter; iter = iter->next) {
c3f2ec71e3d4 New standard linked list to use, rather than adhoc SignKeyList or TCPFwdList Matt Johnston <matt@ucc.asn.au> parents: 505 diff changeset	225 fwd = (struct TCPFwdEntry*)iter->item;
578 44f486b72427 - tcpfwd bindaddr support against trunk. needs merging. Matt Johnston <matt@ucc.asn.au> parents: 551 diff changeset	226 if (origport == fwd->listenport
44f486b72427 - tcpfwd bindaddr support against trunk. needs merging. Matt Johnston <matt@ucc.asn.au> parents: 551 diff changeset	227 && (strcmp(origaddr, fwd->listenaddr) == 0)) {
64 efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	228 break;
efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	229 }
efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	230 }
efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	231
efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	232 if (iter == NULL) {
efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	233 /* We didn't request forwarding on that port */
578 44f486b72427 - tcpfwd bindaddr support against trunk. needs merging. Matt Johnston <matt@ucc.asn.au> parents: 551 diff changeset	234 cleantext(origaddr);
44f486b72427 - tcpfwd bindaddr support against trunk. needs merging. Matt Johnston <matt@ucc.asn.au> parents: 551 diff changeset	235 dropbear_log(LOG_INFO, "Server sent unrequested forward from \"%s:%d\"",
44f486b72427 - tcpfwd bindaddr support against trunk. needs merging. Matt Johnston <matt@ucc.asn.au> parents: 551 diff changeset	236 origaddr, origport);
64 efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	237 goto out;
efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	238 }
efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	239
551 c3f2ec71e3d4 New standard linked list to use, rather than adhoc SignKeyList or TCPFwdList Matt Johnston <matt@ucc.asn.au> parents: 505 diff changeset	240 snprintf(portstring, sizeof(portstring), "%d", fwd->connectport);
c3f2ec71e3d4 New standard linked list to use, rather than adhoc SignKeyList or TCPFwdList Matt Johnston <matt@ucc.asn.au> parents: 505 diff changeset	241 sock = connect_remote(fwd->connectaddr, portstring, 1, NULL);
64 efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	242 if (sock < 0) {
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	243 TRACE(("leave newtcpdirect: sock failed"))
70 b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree Matt Johnston <matt@ucc.asn.au> parents: 66 diff changeset	244 err = SSH_OPEN_CONNECT_FAILED;
64 efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	245 goto out;
efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	246 }
efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	247
efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	248 ses.maxfd = MAX(ses.maxfd, sock);
efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	249
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 184 diff changeset	250 /* We don't set readfd, that will get set after the connection's
64 efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	251 * progress succeeds */
253 84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion Matt Johnston <matt@ucc.asn.au> parents: 184 diff changeset	252 channel->writefd = sock;
64 efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	253 channel->initconn = 1;
efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	254
70 b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree Matt Johnston <matt@ucc.asn.au> parents: 66 diff changeset	255 err = SSH_OPEN_IN_PROGRESS;
64 efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	256
efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	257 out:
578 44f486b72427 - tcpfwd bindaddr support against trunk. needs merging. Matt Johnston <matt@ucc.asn.au> parents: 551 diff changeset	258 m_free(origaddr);
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	259 TRACE(("leave newtcpdirect: err %d", err))
70 b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree Matt Johnston <matt@ucc.asn.au> parents: 66 diff changeset	260 return err;
64 efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	261 }
156 8c2b3506f112 Rearrange preprocessor parts so that compilation with various options Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	262 #endif /* ENABLE_CLI_REMOTETCPFWD */

Mercurial > dropbear

annotate cli-tcpfwd.c @ 786:e76614145aea DROPBEAR_2013.58